Nah, that's the way it works.
Most people audition for lower level producers, who are not particularly rude or helpfully constructive...and then they go home.
The producers specifically pick the best and near best to show the judges plus the most colorful, weirdest and worst.
The TV show is staged as if EVERYONE sings for the judges, and they are being "bombarded" by awful singers, when actually those people are being hand-picked because of their degree of self-delusion, or pity postcard stories, plus, of course, the real hopefuls who have gotten a chance to sing for the judges.
American Idol goes out of its way to NOT spotlight most of the singers who wind up in Hollywood.
I only watch the first few weeks of American Idol in order to witness the reaction of the judges and the slap of reality for the contestants. When there's only good people left, it's boring.